﻿// Copyright 2009 Mike Geise
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
//     http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

namespace Falcon.Core.Services
{
	using System;
	using System.Web;
	using Falcon.Core.Collections;
	using Falcon.Core.Domain;
	using Falcon.Core.Domain.Repositories;
	using Falcon.Core.Domain.Services;
	using Falcon.Core.Extensions;

	public class LogService : ILogService
	{
		/// <summary>
		/// Initializes a new instance of the <see cref="LogService"/> class.
		/// </summary>
		/// <param name="logRepository">The log repository.</param>
		public LogService(ILogRepository logRepository)
		{
			this.LogRepository = logRepository;
		}

		/// <summary>
		/// Gets or sets the log repository.
		/// </summary>
		/// <value>The log repository.</value>
		public ILogRepository LogRepository
		{
			get; 
			private set;
		}

		/// <summary>
		/// Gets the log by specified id.
		/// </summary>
		/// <param name="id">The id.</param>
		/// <returns></returns>
		public Log GetById(int id)
		{
			return this.LogRepository.GetById(id);
		}

		/// <summary>
		/// Gets all the logs by specified specification.
		/// </summary>
		/// <param name="specification">The specification.</param>
		/// <returns></returns>
		public IPagedList<Log, LogSpecification> GetPaged(LogSpecification specification)
		{
			return this.LogRepository.GetPaged(specification);
		}

		/// <summary>
		/// Creates the log.
		/// </summary>
		/// <returns></returns>
		public Log Create()
		{
			return new Log
			{
				Created = DateTime.Now
			};
		}

		/// <summary>
		/// Inserts the specified log.
		/// </summary>
		/// <param name="log">The log.</param>
		public void Insert(Log log)
		{
			log.Validate();

			log.HostAddress = GetHostAddress();

			this.LogRepository.Insert(log);
		}

		/// <summary>
		/// Gets the host address.
		/// </summary>
		/// <returns></returns>
		private static string GetHostAddress()
		{
			if (!Application.IsWebRequest)
			{
				return "127.0.0.1";
			}

			var host = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];

			if (!host.HasValue())
			{
				host = HttpContext.Current.Request.UserHostAddress;
			}

			return (host.HasValue()) ? host : "127.0.0.1";
		}
	}
}